Lup Yuen Lee 李立源 @lupyuen@qoto.org

This Week in #RustLang

https://this-week-in-rust.org/blog/2021/12/01/this-week-in-rust-419/

Here's how we swap #BL602 MOSI and MISO on #NuttX ... So that the SPI Pins are consistent with the BL602 Reference Manual

https://github.com/lupyuen/incubator-nuttx/blob/swap_miso_mosi/arch/risc-v/src/bl602/bl602_spi.c#L1080-L1140

Yep it works fine with #BL602 Firmware 👍

"Japan, The #Gaming Giant: Can It Stay In The Game?"

https://youtu.be/DwBoLPEhljQ

Run statically-compiled #WebAssembly apps on any #Embedded platform

https://github.com/vshymanskyy/embedded-wasm-apps

#PineDio Stack #BL604 now comes with an interesting Baseboard 🤔

Yep it's an updated #PineDio Stack BL604 @PINE64 ... With LoRa SX1262!

https://lupyuen.github.io/articles/pinedio

"Really stupid “smart contract” bug let hackers steal $31 million in digital coin"

https://arstechnica.com/information-technology/2021/12/hackers-drain-31-million-from-cryptocurrency-service-monox-finance/

Jack Dorsey’s Square is changing its name to Block

https://www.theverge.com/2021/12/1/22812752/square-changing-name-block-jack-dorsey-cash-app-tidal-crypto-spiral

"This issue demonstrates that even extremely well-maintained C/C++ can have fatal, trivial mistakes"

https://googleprojectzero.blogspot.com/2021/12/this-shouldnt-have-happened.html?m=1

Yamaha DX7 reverse-engineering, part III: Inside the log-sine ROM

http://www.righto.com/2021/12/yamaha-dx7-reverse-engineering-part-iii.html?m=1

HiFive Unmatched: Exploring A #RISCV Computing Experience

https://hothardware.com/reviews/hifive-unmatched-a-risc-v-proposition

Weekly #Linux Phone news / media roundup

https://linmob.net/linbits-73-weekly-linux-phone-news-week47-48/

We can swap MISO and MOSI on #BL602 by setting a Hardware Register ... Let's do this on #NuttX

https://lupyuen.github.io/articles/pinedio#spi-pins-are-swapped

Logic Analyser connected to #BL602 shows that MISO and MOSI are swapped! This happens in BL602 IoT SDK ... Also in #NuttX!

https://lupyuen.github.io/articles/spi#spi-data-pins-are-flipped

#NuttX's SPI Pins match the #BL602 Reference Manual: MOSI = GPIO 1, MISO = GPIO 0 ... But we're about to witness a BL602 SPI Quirk

https://github.com/bouffalolab/bl_docs/tree/main/BL602_RM/en

In #NuttX the SPI Pins for #BL602 are defined in "board.h" ... MOSI is GPIO 1, MISO is GPIO 0

https://github.com/lupyuen/incubator-nuttx/blob/spi_test/boards/risc-v/bl602/bl602evb/include/board.h#L87-L92

How to verify the #NuttX SPI Output? We sniff the #BL602 SPI Bus with a Logic Analyser

https://lupyuen.github.io/articles/spi#appendix-troubleshoot-bl602-spi-with-logic-analyser

#RISCV Processors expected to double in 2022, and double again in 2023

https://www.techrepublic.com/article/risc-vs-open-chip-processors-expected-to-double-in-2022-and-double-again-in-2023/

Now we see every byte transferred by #NuttX's SPI Driver for #BL602!

https://github.com/lupyuen/incubator-nuttx/blob/spi_test/drivers/rf/spi_test_driver.c